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Sökning: WFRF:(Raut C. P.) > Revealing Callisto'...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00005016naa a2200541 4500
001oai:DiVA.org:kth-344588
003SwePub
008240320s2024 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3445882 URI
0247 a https://doi.org/10.3847/PSJ/ad23e62 DOI
040 a (SwePub)kth
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Cartwright, Richard J.u Johns Hopkins University Applied Physics Laboratory, USA4 aut
2451 0a Revealing Callisto's Carbon-rich Surface and CO2 Atmosphere with JWST
264 1b American Astronomical Society,c 2024
338 a print2 rdacarrier
500 a QC 20240321
520 a We analyzed spectral cubes of Callisto’s leading and trailing hemispheres, collected with the NIRSpec Integrated Field Unit (G395H) on the James Webb Space Telescope. These spatially resolved data show strong 4.25 μm absorption bands resulting from solid-state 12CO2, with the strongest spectral features at low latitudes near the center of its trailing hemisphere, consistent with radiolytic production spurred by magnetospheric plasma interacting with native H2O mixed with carbonaceous compounds. We detected CO2 rovibrational emission lines between 4.2 and 4.3 μm over both hemispheres, confirming the global presence of CO2 gas in Callisto’s tenuous atmosphere. These results represent the first detection of CO2 gas over Callisto’s trailing side. The distribution of CO2 gas is offset from the subsolar region on either hemisphere, suggesting that sputtering, radiolysis, and geologic processes help sustain Callisto’s atmosphere. We detected a 4.38 μm absorption band that likely results from solid-state 13CO2. A prominent 4.57 μm absorption band that might result from CN-bearing organics is present and significantly stronger on Callisto’s leading hemisphere, unlike 12CO2, suggesting these two spectral features are spatially antiassociated. The distribution of the 4.57 μm band is more consistent with a native origin and/or accumulation of dust from Jupiter’s irregular satellites. Other, more subtle absorption features could result from CH-bearing organics, CO, carbonyl sulfide, and Na-bearing minerals. These results highlight the need for preparatory laboratory work and improved surface-atmosphere interaction models to better understand carbon chemistry on the icy Galilean moons before the arrival of NASA’s Europa Clipper and ESA’s JUICE spacecraft.
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
7001 a Villanueva, Geronimo L.u NASA Goddard Space Flight Center, USA4 aut
7001 a Holler, Bryan J.u Space Telescope Science Institute, USA4 aut
7001 a Camarca, Mariau California Institute of Technology, USA4 aut
7001 a Faggi, Sarau NASA Goddard Space Flight Center, USA4 aut
7001 a Neveu, Marcu NASA Goddard Space Flight Center, USA; University of Maryland, USA4 aut
7001 a Roth, Lorenzu KTH,Rymd- och plasmafysik4 aut0 (Swepub:kth)u1ml3zu9
7001 a Raut, Ujjwalu Southwest Research Institute, San Antonio, TX, USA4 aut
7001 a Glein, Christopher R.u Southwest Research Institute, San Antonio, TX, USA4 aut
7001 a Castillo-Rogez, Julie C.u California Institute of Technology, USA; Jet Propulsion Laboratory, USA4 aut
7001 a Malaska, Michael J.u California Institute of Technology, USA; Jet Propulsion Laboratory, USA4 aut
7001 a Bockelée-Morvan, Dominiqueu LESIA, Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS, France4 aut
7001 a Nordheim, Tom A.u Johns Hopkins University Applied Physics Laboratory, USA4 aut
7001 a Hand, Kevin P.u California Institute of Technology, USA; Jet Propulsion Laboratory, USA4 aut
7001 a Strazzulla, Giovanniu Istituto Nazionale di Astrofisica, Italy4 aut
7001 a Pendleton, Yvonne J.u University of Central Florida, USA4 aut
7001 a de Kleer, Katherineu California Institute of Technology, USA4 aut
7001 a Beddingfield, Chloe B.u Johns Hopkins University Applied Physics Laboratory, USA4 aut
7001 a de Pater, Imkeu University of California Berkeley, USA4 aut
7001 a Cruikshank, Dale P.u University of Central Florida, USA4 aut
7001 a Protopapa, Silviau Southwest Research Institute, Boulder, CO, USA4 aut
7102 a Johns Hopkins University Applied Physics Laboratory, USAb NASA Goddard Space Flight Center, USA4 org
7730 t The Planetary Science Journald : American Astronomical Societyg 5:3q 5:3x 2632-3338
8564 u https://doi.org/10.3847/PSJ/ad23e6y Fulltext
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-344588
8564 8u https://doi.org/10.3847/PSJ/ad23e6

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